CN209000322U - A kind of lever balance experimental provision and experimental facilities - Google Patents
A kind of lever balance experimental provision and experimental facilities Download PDFInfo
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- CN209000322U CN209000322U CN201821368245.XU CN201821368245U CN209000322U CN 209000322 U CN209000322 U CN 209000322U CN 201821368245 U CN201821368245 U CN 201821368245U CN 209000322 U CN209000322 U CN 209000322U
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- lever
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- wedge angle
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Abstract
The utility model embodiment discloses a kind of lever balance experimental provision and experimental facilities, is related to experimental provision technical field, invents to mitigate the workload of teacher.The lever balance experimental provision includes: pedestal, and the pedestal is equipped with column；The column is equipped with lever, is supported on the column to the central rotatable of the lever；The left side of the lever central is equipped with the first detection mark, and the right side of the lever central is equipped with the second detection mark；When the lever is in equilibrium state, the center of the first detection mark and the second detection mark is on a horizontal line, and when the lever is in nonequilibrium condition, the center of the first detection mark and the second detection mark is not on a horizontal line.The utility model is suitable for the examination or evaluation of lever balance experiment.
Description
Technical field
The utility model relates to experimental provision technical field more particularly to a kind of lever balance experimental provisions and experiment to set
It is standby.
Background technique
In order to grasp lever balance theory, student can be used lever balance experimental provision and test.Currently, to student
When carrying out lever balance experimental evaluation, teacher is needed successively to score the experimental implementation of each student in experimental field, always
The larger workload of teacher.
Summary of the invention
In view of this, the utility model embodiment provides a kind of lever balance experimental provision and experimental facilities, convenient for mitigating
The workload of teacher.
In a first aspect, the utility model embodiment provides a kind of lever balance experimental provision, comprising: pedestal, the pedestal
It is equipped with column；The column is equipped with lever, is supported on the column to the central rotatable of the lever；The lever
The left side at center is equipped with the first detection mark, and the right side of the lever central is equipped with the second detection mark；The lever is in flat
When weighing apparatus state, on a horizontal line, the lever is in non-flat at the center of the first detection mark and the second detection mark
When weighing apparatus state, the center of the first detection mark and the second detection mark is not on a horizontal line.
According to a specific implementation of the utility model embodiment, the first detection mark is with the first wedge angle
Direction board, the second detection mark is the direction board with the second wedge angle；When the lever is in equilibrium state, described first
The second wedge angle on the first wedge angle, the second detection mark on detection mark vertically upward, and first wedge angle and the
The center of two wedge angles is on a horizontal line, when the lever is in nonequilibrium condition, first wedge angle and the second wedge angle
Center is not on a horizontal line.
According to a specific implementation of the utility model embodiment, the column is equipped with third detection mark；It is described
When lever is in equilibrium state, in the line and third detection mark at the center of the first detection mark and the second detection mark
Vertical line where the heart is perpendicular.
According to a specific implementation of the utility model embodiment, the column is equipped with third detection mark, described
Third detection mark is the direction board with third wedge angle, and the third detects the third wedge angle on mark vertically upward；It is described
It is perpendicular where the line at the center of first wedge angle and the second wedge angle and the center of third wedge angle when lever is in equilibrium state
Straight line is perpendicular.
According to a specific implementation of the utility model embodiment, the left end of the lever is equipped with the first screw rod, the
One screw rod is equipped with the first balance nut；The right end of the lever is equipped with the second screw rod, and the second balance is equipped on the second screw rod
Nut；It is equipped with the 4th detection mark at the position of the first screw rod in the left end of the lever, is leaned in the right end of the lever
The 5th detection mark is equipped at the position of nearly second screw rod；Wherein, the 4th detection mark is the instruction with the 4th wedge angle
Board；The 5th detection mark is the direction board with the 5th wedge angle；When the lever is in equilibrium state, the 4th wedge angle
Be oriented to it is horizontal to the left, the 5th wedge angle is oriented to horizontally to the right.
According to a specific implementation of the utility model embodiment, the first detection mark, the second detection mark, the
Three detection marks, the 4th detection mark and the 5th detection indicate upper tag mark having the same.
According to a specific implementation of the utility model embodiment, the first detection mark, the second detection mark, the
Three detection marks, the 4th detection mark and the 5th detection mark, are triangle, pentagon or diamond shape direction board.
Second aspect, the utility model embodiment also provide a kind of experimental facilities, including experimental bench, on the experimental bench
Equipped with lever balance experimental provision described in aforementioned any embodiment；It is additionally provided with camera mount on the experimental bench, in institute
State the video camera being equipped on camera mount for recording a video to experimentation.
According to a specific implementation of the utility model embodiment, the camera mount includes: rack body and determines
Type pipe, one end of the calibration tube are connected on the rack body, and the other end is equipped with photographic device mounting portion, the video camera
It is mounted on photographic device mounting portion.
The left side of the utility model embodiment lever balance experimental provision and experimental facilities, the lever central is equipped with first
Detection mark, the right side of the lever central are equipped with the second detection mark；When the lever is in equilibrium state, first inspection
The center of mark will and the second detection mark is on a horizontal line, when the lever is in nonequilibrium condition, first inspection
Mark will and second detection mark center not on a horizontal line, in this way, convenient for using photographic device to experimentation into
Row video recording is convenient to detect what the first detection mark and the second detection indicated by image recognition according to the image recorded
Relative position can judge accordingly whether the lever is in equilibrium state, that is to say, that the present embodiment is convenient for passing through image recognition
Detect whether lever is in equilibrium state, consequently facilitating mitigating the workload of teacher.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is an embodiment of the present invention lever balance experimental provision structural schematic diagram；
Fig. 2 is another embodiment lever balance experimental provision structural schematic diagram of the utility model；
Fig. 3 is the utility model embodiment experimental facilities structural schematic diagram；
Fig. 4 is the structural schematic diagram of camera mount in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of camera mount in another embodiment of the utility model；
Fig. 6 is the structural schematic diagram of camera mount in another embodiment of the utility model；
Fig. 7 is the structural schematic diagram of camera mount in the utility model another embodiment.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
All other embodiment obtained, fall within the protection scope of the utility model.
The utility model embodiment provides a kind of lever balance experimental provision, for carrying out lever balance experiment, referring to figure
1, the lever balance experimental provision can include: pedestal 1, the pedestal 1 are equipped with column 2；The column 2 is equipped with lever 3,
It is supported on the column 2 to the central rotatable of the lever 3, the left side of the lever central is equipped with the first detection mark 4,
The right side of the lever central is equipped with the second detection mark 5；When the lever 3 is in equilibrium state, the first detection mark 4
Center with the second detection mark 5 is on a horizontal line, when the lever 3 is in nonequilibrium condition, the first detection mark
The center of will 4 and the second detection mark 5 is not on a horizontal line.
Wherein, the pedestal 1 can be one piece of iron plate, for providing stable support for entire experimental provision.The thick stick
It is supported on to the central rotatable of bar 3 on the column 2.In an embodiment of the utility model, a support can be equipped on column 2
Axis Z, the center of lever 3 can have a circular hole or a groove, and lever 3 is by the circular hole or groove carry in the support shaft Z
On, the lever 3 can be rotated around the support shaft.In another embodiment of the utility model, on the column 2 and center of lever 3
Through-hole is all had, is equipped with axis body in the through hole, column 2 and lever 3 are hinged by the axis body.
The left side of the lever central is equipped with the first detection mark 4, and the right side of the lever central is equipped with the second detection mark
Will 5；When the lever 3 is in equilibrium state, the center of the first detection mark 4 and the second detection mark 5 is in a level
On line, when the lever 3 is in nonequilibrium condition, the center of the first detection mark 4 and the second detection mark 5 is not at one
On horizontal line, in this way, according to the image recorded, passing through image recognition convenient for recording a video using photographic device to experimentation
It is convenient to detect the first detection mark 4 and the second examination target relative position, can judge whether the lever 3 is in accordingly
Equilibrium state, that is to say, that the present embodiment is convenient for detecting whether lever 3 is in equilibrium state by image recognition, thus just
In the workload for mitigating teacher, can also lay the foundation for the manual intelligent of practical exam.In addition, using the experiment of the present embodiment
Device, when being recorded a video using photographic device to experimentation, do not need teacher scene marking, save student waiting when
Between, the utilization rate of experimental provision can be improved.
The first detection mark 4 and the second detection mark 5 can be any convenient for being detected by image recognition
Mark, for example can be color-coded, pattern mark, shape mark etc., it is also possible to color-coded, pattern mark, shape
Any combination of mark.
Referring to Fig. 1, in an embodiment of the utility model, the first detection mark 4 is the instruction with the first wedge angle
Board, the second detection mark 5 is the direction board with the second wedge angle；When the lever 3 is in equilibrium state, first inspection
The first wedge angle in mark will 4, the second wedge angle on the second detection mark 5 vertically upward, and first wedge angle and the
The center of two wedge angles is on a horizontal line, when the lever 3 is in nonequilibrium condition, first wedge angle and the second wedge angle
Center is not on a horizontal line.Using having angular direction board as the first detection mark 4 and the second detection mark, indicate
Feature is relatively obvious, it is easier to the relative position of the two is detected by way of image recognition.
In an embodiment of the utility model, the column 2 is equipped with third and detects mark 6, and the lever 3 is in balance
When state, where the line at the center of the first detection mark 4 and the second detection mark 5 and third detection mark 6 center
Vertical line is perpendicular.Mark 6 is detected by third on column 2, by means of the first detection mark 4, the second detection mark 5 and the
Relative positional relationship between three detection marks 6, it is easier to detect lever 3 whether in balance by way of image recognition
State.
In an embodiment of the utility model, third detection mark 6 is the direction board with third wedge angle, described the
Third wedge angle on three detection marks 6 is vertically upward；When the lever 3 is in equilibrium state, first wedge angle and the second point
The line at the center at angle and the vertical line where the center of third wedge angle are perpendicular.
The left end of the lever 3 is equipped with the first screw rod 7, and the first balance nut 8 is equipped on the first screw rod 7；The lever 3
Right end be equipped with the second screw rod 9, on the second screw rod 9 be equipped with the second balance nut 10.
For the ease of detecting whether student has operation to balance nut by image recognition, implement in the utility model one
In example, the 4th detection mark 11 is equipped at the position of the first screw rod 7 in the left end of the lever 3, on the right side of the lever 3
It holds and is equipped with the 5th detection mark 12 at the position of the second screw rod 9；Wherein, the 4th detection mark 11 is with the 4th point
The direction board at angle；The 5th detection mark 12 is the direction board with the 5th wedge angle；When the lever 3 is in equilibrium state,
4th wedge angle is oriented to level to the left, and the 5th wedge angle is oriented to horizontally to the right.
When student is in adjustment nut, the 4th detection mark 11 or the can be detected by image processing means
The position of five detection marks 12 and hand, to judge that student is the operation for having adjustment nut.Specifically, when detecting student
Hand center and the 4th detection mark or the 5th detection mark center distance be less than first threshold when, it may be determined that student
There is the operation of adjustment nut；When in the center for the hand for detecting student and the 4th detection mark or the 5th detection mark
When the distance of the heart is greater than first threshold, it may be determined that student does not have the operation of adjustment nut.By the hand for detecting student
The direction of the wedge angle of position and the 4th detection mark 11 and the 5th detection mark 12 can detect that student to which end of lever 3
Balance nut be adjusted.
When carrying out image recognition, for the ease of quickly detecting the first detection mark 4, the second detection mark 5, third inspection
Mark will the 6, the 4th detects mark 11 and the 5th detection mark 12, the first detection mark 4, the second detection mark 5, third detection mark
Will the 6, the 4th detects tag mark having the same on mark 11 and the 5th detection mark 12.In this way, when performing image processing,
It only needs to detect a kind of tag mark, then the direction and position according to detection mark, can be completed lever key position or pass
The identification of key operation behavior carries out automatic scoring convenient for the operation to student.In the present embodiment, the first detection mark 4, the second inspection
Mark will 5, third detection mark 6, the 4th detection mark 11 are identical with the tag mark on the 5th detection mark 12, are letter
“B”。
In an embodiment of the utility model, it is described first detection mark 4, second detection mark 5, third detection mark 6,
4th detection mark 11 and the 5th detection mark 12, are triangle, pentagon or diamond shape direction board.
Referring to Fig. 2, in an embodiment of the utility model, first is hung in the hanging hole of described 3 one end of lever and is hung
Counterweight hook 13 is hung, is hung with counterweight 14 on the first hanging counterweight hook；It is hung in the hanging hole of 3 other end of lever
Second hangs counterweight hook 15, is also hung with counterweight 14 on the second hanging counterweight hook 15, has on the outer surface of the counterweight
Indicate the number mark of counterweight weight size.In the present embodiment, the hanging hole is the logical of the suspender member bottom end being located on lever 3
Hole, the suspender member can be moved left and right along the length direction of the lever.
In an embodiment of the utility model, the top of the first hanging counterweight hook 13 and the second hanging counterweight hook 15 all has
Hook, through hook hanging in hanging hole.The bottom of first hanging counterweight hook 13 and the second hanging counterweight hook 15 can be distinguished
With a pallet, each counterweight can be placed sequentially on the pallet, and counterweight hanging is hung counterweight hook first to realize
On 13 and on the second hanging counterweight hook 15.The utility model is without being limited thereto, in another embodiment, the top and bottom of each counterweight
Portion is equipped with hook, multiple counterweights then can be successively hung below the counterweight first by a counterweight hanging in hanging hole.
There is the number mark of mark counterweight weight size on the outer surface of the counterweight 14, can directly pass through image recognition
It determines counterweight weight size, and then can determine that the size of power and the size of resistance, in conjunction with the length of power arm and resistance arm
Whether the operation that degree size can assess student meets lever balance theory, and can score the experimental implementation of student.
If detect the left or right hand of student center and the 4th detection mark or the 5th detection mark center away from
When from being less than first threshold, and counterweight is not detected on lever, then can determine that student has adjustment spiral shell in the experiment incipient stage
Female operation；If detect the left or right hand of student center and the 4th detection mark or the 5th detection mark center away from
When from being greater than first threshold, and counterweight is detected on lever, then can determine that student has adjustment nut in the experiment progress stage
Operation.
Referring to Fig. 3, the utility model embodiment also provides a kind of experimental facilities, including experimental bench 17, in the experimental bench
17 are equipped with lever balance experimental provision described in aforementioned any embodiment；Camera mount is additionally provided on the experimental bench 17
18, the video camera 19 for recording a video to experimentation is installed on the camera mount 18.
In a kind of possible embodiment, in order to become apparent from comprehensive video shooting process, camera mount 18 can be with
The front of lever balance experimental provision is set.Certainly, camera mount 18 also can be set in lever balance experimental provision
Side, the present invention is it is not limited here.
According to an embodiment of the present invention, referring to Fig. 4, optionally, the camera mount 18 can include: frame ontology 21
With calibration tube 22, one end of the calibration tube 22 is connected on the rack body 21, and the other end is equipped with photographic device mounting portion
23, the video camera 19 is mounted on photographic device mounting portion 23.
The calibration tube 22 is curled up made of cladding as metal spring steel wire and galvanized iron wire or other metal wire rods
Composite metal pipe, it is hollow to have spiral lamination outside, a certain size electric wire can be passed through in pore, be that one kind can be in solid space
In arbitrarily bend to certain shapes and be able to maintain the hose of its shape.
In addition, in the case where rack body 21 is not required to mobile, can be adjusted by bend fixing pipe 22 in the present embodiment
The position of video camera 19, structure is relatively easy, and cost is relatively low.
Multiple structural forms can be used in the rack body 21, for example can be used one company can directly be fixed with testing stand
The form of the support rod, support plate or the support frame that connect.In order to enable rack body 21 can provide stable branch for video camera 19
Support, but it is mobile convenient for flexible position can be carried out as needed, for example be moved to separately on same testing stand from a position
One position, so that video camera 19 is in preferable camera site or shooting angle, alternatively, different testing stands can be placed into
On, referring to Fig. 5, in an embodiment of the utility model, the rack body 21 may include pedestal 25 and with 25 phase of pedestal
Support rod even or support plate 6；One end of the calibration tube 22 is connected in the support rod or support plate 26.Rack body 21
It is placed on experimental bench 17 by the pedestal 25, provides stable support using the pedestal 25, meanwhile, the pedestal 25 can
It is conveniently separated with experimental bench 17, consequently facilitating rack body 21 carries out flexible position movement when needed.The bottom
Seat 25 can be metab, for example can be used that cost is relatively low iron plate is made, to enhance the stability of rack body 21 on the whole；Institute
Stating support plate 26 can be strip.
Referring to Fig. 6, in order to make full use of the rack body 21, one can be arranged on the support rod or support plate 26
Or multiple partitions 28, convenient for placing article (such as the electricity that may be used when Physical Experiment of experiment on the partition 28
Sub- component etc.), or the portable small articles of experimenter (such as certificate, key or mobile phone etc.) is placed, to save to reality
Test the occupancy in the space on platform 17.
Video shooting is carried out to experimentation using single photographic device, it may or experiment people single because of shooting angle
The arm of member such as blocks at the situation that reasons cause shooting effect bad, for this purpose, can be arranged on the rack body 21 two or
More than two photographic devices, to be shot from different angles to same experimentation, to obtain preferably video recording effect.
Specifically, referring to Fig. 7, in an embodiment of the utility model, the calibration tube 22 may include the first calibration tube 29
With the second calibration tube 30；One end of first calibration tube 29 is connected on the rack body 21, and the other end is equipped with the first camera shooting dress
Set mounting portion 31；One end of second calibration tube 30 is connected on the rack body 21, and the other end is pacified equipped with the second photographic device
Dress portion 32；Second calibration tube 30 is located at the top of the first calibration tube 29.
According to the present embodiment, first photographic device 33 can be installed in the first photographic device mounting portion 31, in the second camera shooting dress
It sets mounting portion 32 and second photographic device 34 is installed, convenient for passing through the first photographic device 33 and the second photographic device 34 from different bats
Take the photograph angle and video shooting carried out to same experimentation, for example, for same experimentation, can by the first photographic device 33 from
Level angle is shot, and is shot by the second photographic device 34 from the angle of vertical view, in such manner, it is possible to more comprehensively right
Experimentation is recorded a video, and preferable video recording effect is obtained.
In an embodiment of the utility model, the calibration tube 22 has bellow-type expansion joint or slip expansion section (in figure not
It shows).The length of calibration tube 22 is adjusted by the bellow-type expansion joint or slip expansion section, for example, before experiment starts, it can
Calibration tube 22 is stretched to suitable position by the bellow-type expansion joint or slip expansion section, after the end of the experiment, can be passed through
Calibration tube 22 is carried out compression gathering by the bellow-type expansion joint or slip expansion section, is reduced its space occupied, is also convenient in this way
Rack body 21 is stored.
The photographic device mounting portion is provided convenience for installation of the photographic device in 22 end of calibration tube.The peace
Dress portion can also there are many forms, for example can be deck form, can also be the mounting base form, etc. with threaded hole.In this reality
With in a novel embodiment, the photographic device mounting portion is sucker.Pass through a plane on photographic device (such as photographic device
Back flat), fit with the adsorption plane of the sucker, photographic device can be quickly and easily adsorbed on to the end of calibration tube 22
Portion, meanwhile, sucker is usually made of rubber, and will not generate the interference signals such as electromagnetism, is thus not easy to photographic device generation
The interference in damage and signal in reason.
For the ease of being adjusted to link position of the calibration tube 22 on rack body 21, implement in the utility model one
In example, described one end of the calibration tube 22 can adjust ground up and down and/or rotatably be connected to the rack body 21 to adjustment
On.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence " including one ... ", it is not excluded that
There is also other identical elements in the process, method, article or apparatus that includes the element.
Each embodiment in this specification is all made of relevant mode and describes, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, the change that can be readily occurred in
Change or replace, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with power
Subject to the protection scope that benefit requires.
Claims (9)
1. a kind of lever balance experimental provision characterized by comprising
Pedestal, the pedestal are equipped with column；
The column is equipped with lever, is supported on the column to the central rotatable of the lever；The lever central
Left side is equipped with the first detection mark, and the right side of the lever central is equipped with the second detection mark；
When the lever is in equilibrium state, the center of the first detection mark and the second detection mark is in a horizontal line
On, when the lever is in nonequilibrium condition, the center of the first detection mark and the second detection mark is not in a level
On line.
2. lever balance experimental provision according to claim 1, which is characterized in that the first detection mark is with the
The direction board of one wedge angle, the second detection mark is the direction board with the second wedge angle；
When the lever is in equilibrium state, on the first wedge angle, the second detection mark on the first detection mark
Vertically upward, and the center of first wedge angle and the second wedge angle, on a horizontal line, the lever is in non-to second wedge angle
When equilibrium state, the center of first wedge angle and the second wedge angle is not on a horizontal line.
3. lever balance experimental provision according to claim 1, which is characterized in that the column is equipped with third detection mark
Will；
When the lever is in equilibrium state, the line and third at the center of the first detection mark and the second detection mark are examined
Vertical line where mark will center is perpendicular.
4. lever balance experimental provision according to claim 2, which is characterized in that the column is equipped with third detection mark
Will, the third detection mark is the direction board with third wedge angle, the vertical court of third wedge angle on the third detection mark
On；
When the lever is in equilibrium state, the line at the center of first wedge angle and the second wedge angle and the center of third wedge angle
The vertical line at place is perpendicular.
5. lever balance experimental provision according to claim 4, which is characterized in that the left end of the lever is equipped with the first spiral shell
Bar is equipped with the first balance nut on the first screw rod；The right end of the lever is equipped with the second screw rod, and the is equipped on the second screw rod
Two balance nuts；
The 4th detection mark is equipped at the position of the first screw rod in the left end of the lever, it is close in the right end of the lever
The 5th detection mark is equipped at the position of second screw rod；Wherein, the 4th detection mark is the direction board with the 4th wedge angle；
The 5th detection mark is the direction board with the 5th wedge angle；
When the lever is in equilibrium state, the 4th wedge angle is oriented to level to the left, and the 5th wedge angle is oriented to
Horizontally to the right.
6. lever balance experimental provision according to claim 5, which is characterized in that the first detection mark, the second inspection
Mark will, third detection mark, the 4th detection mark and the 5th detection indicate upper tag mark having the same.
7. lever balance experimental provision according to claim 5, which is characterized in that the first detection mark, the second inspection
Mark will, third detection mark, the 4th detection mark and the 5th detection mark, are triangle, pentagon or diamond shape direction board.
8. a kind of experimental facilities, including experimental bench, which is characterized in that be equipped with any one of claim 1-7 on the experimental bench
The lever balance experimental provision；
It is additionally provided with camera mount on the experimental bench, is equipped on the camera mount for being carried out to experimentation
The video camera of video recording.
9. experimental facilities according to claim 8, which is characterized in that the camera mount includes: rack body and determines
Type pipe, one end of the calibration tube are connected on the rack body, and the other end is equipped with photographic device mounting portion, the video camera
It is mounted on photographic device mounting portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821368245.XU CN209000322U (en) | 2018-08-23 | 2018-08-23 | A kind of lever balance experimental provision and experimental facilities |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821368245.XU CN209000322U (en) | 2018-08-23 | 2018-08-23 | A kind of lever balance experimental provision and experimental facilities |
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| Publication Number | Publication Date |
|---|---|
| CN209000322U true CN209000322U (en) | 2019-06-18 |
Family
ID=66798952
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821368245.XU Expired - Fee Related CN209000322U (en) | 2018-08-23 | 2018-08-23 | A kind of lever balance experimental provision and experimental facilities |
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| Country | Link |
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| CN (1) | CN209000322U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111223343A (en) * | 2020-03-07 | 2020-06-02 | 上海中科教育装备集团有限公司 | Artificial intelligence scoring experimental equipment and scoring method for lever balance experiment |
| CN111768668A (en) * | 2020-03-31 | 2020-10-13 | 杭州海康威视数字技术股份有限公司 | Experimental operation scoring method, device, equipment and storage medium |
| CN113395472A (en) * | 2020-03-12 | 2021-09-14 | 杭州海康威视数字技术股份有限公司 | Video-based scoring method and device, electronic equipment and storage medium |
-
2018
- 2018-08-23 CN CN201821368245.XU patent/CN209000322U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111223343A (en) * | 2020-03-07 | 2020-06-02 | 上海中科教育装备集团有限公司 | Artificial intelligence scoring experimental equipment and scoring method for lever balance experiment |
| CN111223343B (en) * | 2020-03-07 | 2022-01-28 | 上海中科教育装备集团有限公司 | Artificial intelligence scoring experimental equipment and scoring method for lever balance experiment |
| CN113395472A (en) * | 2020-03-12 | 2021-09-14 | 杭州海康威视数字技术股份有限公司 | Video-based scoring method and device, electronic equipment and storage medium |
| CN111768668A (en) * | 2020-03-31 | 2020-10-13 | 杭州海康威视数字技术股份有限公司 | Experimental operation scoring method, device, equipment and storage medium |
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Granted publication date: 20190618 Termination date: 20210823 |